CZ289608B6 - Lock cylinder - Google Patents

Abstract

The invented lock cylinder has lock cylinder housing (10) with a location hole (12) and a lock cylinder core (14, 114) rotatably mounted about axis of rotation and located in said location hole (12) with a passage (16, 116) for a key (32, 32', 132). In said lock cylinder core (14, 114) passage (18, 118) that is situated parallel to the axis of rotation, there is slidably mounted an element (20, 20', 120. 120') that is sprung by a springing element (26, 126) and provided with a stop pin (20b, 20b', 120b).

Description

(57)

The locking cylinder has both a locking cylinder body (10) with a receiving hole (12) and a pivoting bearing (16, 116) of a locking cylinder (16, 116) for a key (32, 32 ') around the pivot axis around the pivot axis. 132). A biasing element (20, 20 ', 120, 120') provided with a stop pin (20b) is displaceably mounted in a channel (18,118) of the locking cylinder core (14,114) parallel to the axis of rotation. 20b ', 120b).

(11) Document number:

289 608 (13) Document type: B6 (51) Int. Cl ⁷ i

E05B 27/04

E05B 27/06

CD about CD σ> oo CM

N O

Locking roller

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a locking cylinder having a locking cylinder body with a receiving bore defined by an inner circumferential surface and a rotatably mounted locking cylinder core with a key channel extending from a key insertion end at one end of the locking core. a roller parallel to the axis of rotation and which is provided with at least one control track in at least one side face for receiving the profile-adjusted keys, said control track extending parallel to the axis of rotation and having a variable level formed by recesses and at least one inelastic holding pin at least one guide aperture of the locking cylinder core, the axis of the aperture being provided in a holding plane perpendicular to the axis of rotation and extending into a control path, the holding pin being displaceable along the axis of the guide aperture of this opening and in the basic pivoting position of the locking cylinder, after insertion of the matched profile key and code combination, is adjustable into the release position for the desired functional release rotation of the locking cylinder core about the pivot axis; to a locking position to retain the lock cylinder core against rotation in the direction of a functional release position.

BACKGROUND OF THE INVENTION

A locking cylinder of this type is known from DE-PS 31 23 511 and DE-OS 20 03 059.

DE 34 24 336 A1 also discloses a locking cylinder, in which the core of the locking cylinder is normally lockable by pairs of key-operated, retaining pins which are spring-biased, the pins being adjusted by their separating planes when the key is adapted to the profile. into the separating surfaces between the core of the locking cylinder and the body of the locking cylinder. Also provided in the core of the locking cylinder is an axial displacement element which cooperates with a core-holding retaining pin of a pair of resiliently biased retaining pins. The axial displacement element is biased axially by a spring in the direction of the inlet of the key channel and can be displaced on the corresponding key by a shaped rib at its front end when the key is inserted. In its basic position, the axial displacement element engages the annular groove of the core-holding pin, thereby locking the pin against displacement. When the corresponding key is inserted, the key first strikes the bearing surface of the axial displacement element with the front end of the rib, thereby displacing the axial displacement element and, during this displacement, to reach the opposite position with respect to the core-holding pin. Then, the core-side holding pin is displaceable by the key tip and the key face. The key must be pushed even further in order to actually move the retaining pin provided on the core side. In this further insertion of the key, the axial displacement element is also inserted. Now that this further displacement of the axial displacement element keeps the retaining pin on the core side further displaceable, since its displacement is the aim of further insertion of the key, the taper of the axial displacement element must be adjusted to such dimensions that the retaining pin provided on the core side remains in the region tapering over the entire remaining insertion path of the key, i.e. the insertion path which begins with the tip of the key on the axial displacement element and ends only when the key is fully inserted into the key channel.

In view of the further increasing security requirements, the invention aims to achieve a further increase in the security of locking.

SUMMARY OF THE INVENTION

The object of the invention is to provide a biasing element which is displaceably supported by a spring element in a locking cylinder core channel, which is situated parallel to the axis of rotation, and is provided with a stop pin in the rest position with the blocking element of a non-biased element. a locking pin, thereby blocking the rotation of the locking cylinder core, and in a working position in which a corresponding key is inserted into the key channel, which is in contact with its abutment pin of the element due to the force of the spring element in its end position , the element is out of engagement with the locking element of the retaining pin.

Preferably, the locking element of the retaining pin is formed by a recess in which the full profile section of the element fits, the element having a recess through which the full profile of the retaining pin passes in the end position of the stop pin.

Preferably, the element is formed with a cylindrical profile and its recess is formed by an annular recess.

Preferably, the retaining pin is formed with a cylindrical profile and its locking element is formed by an annular recess.

Preferably, the driving surface of the key is formed by the bottom of the longitudinal groove formed in the side surface of the key.

Preferably, the stop pin is formed by a projection of the element which projects on the side of the key channel.

Preferably, the channel is formed as an axial opening separated from the key channel.

Preferably, the opening in which the core of the locking cylinder is received has a recess for the non-biased retaining pin on the inner circumferential surface.

Preferably, the recess in the axial direction is delimited by a retaining surface adjacent the outer end of the retaining pin.

Advantageously, the core of the locking cylinder has a plurality of retaining pins of the same length, the associated recesses on the inner peripheral surface of the element and the recesses on the keyway of the key having the same depth.

Preferably, the axial length of the recess of the element is adjusted according to the full cross-section of the retaining pin.

Preferably, the axial length of the recess of the element is greater than the cross-section of the retaining pin.

Advantageously, the mounting height of the element stop pins and the mounting height of the driving surfaces of the key are the same and matched to the type of locking cylinder with locking cylinder.

The solution according to the present invention has advantages over the prior art solutions in that it is easy to manufacture and assemble while attaining a significantly higher level of security than before. At the same time, the number of possible code combinations is also increased.

The invention is explained in more detail below with reference to the accompanying drawings, in which:

-2GB 289608 B6

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically shows a locking cylinder according to the invention with the key removed. Fig. 2 is a cross-sectional view taken along the line II-II in Fig. 1; Fig. 3 shows the locking cylinder of Fig. 1 with a matched key inserted. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3;

FIG. 5 is a longitudinal cross-sectional view of a locking cylinder according to the invention comprising a bore axis and a key face. FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5 with the key inserted in the keyed position in the basic pivoting position of the locking cylinder; FIG. 7 is a cross-sectional view corresponding to the embodiment of FIG. 6, but after partial locking of the locking cylinder core. Fig. 8 is a cross-sectional view of Fig. 6 when the key is removed. Fig. 9 shows a longitudinal section corresponding to the longitudinal section of Fig. 5 with the key adapted to be inserted but not adapted to confidentiality. FIG. 10 is a section along the line X - X in FIG. 9;

Fig. 11 shows a side view of a key suitable for a locking cylinder according to the invention. Fig. 12 is a section along the line XII-XII in Fig. 11. Fig. 13 is a section along the line XIII - XIII in Fig. 11.

Figures 14, 14a, 15 and 15a show diagrams of the construction of the locking device when the locking rollers according to the invention are fitted.

FIG. 16 shows a realistic embodiment of a locking cylinder in accordance with FIG. 15 belonging to a locking device.

DETAILED DESCRIPTION OF THE INVENTION

1 to 4, the locking cylinder body 10 is shown. This locking cylinder body 10 has a core bore 12 with an inner peripheral surface 12a. A lock cylinder core 14 with a key channel 16 is inserted into the receiving opening 12 of the core 14. Parallel to the key channel 16, a displacement channel 18 having an axial displacement element 20 in the form of a substantially cylindrical pin is provided within the core 14 of the locking cylinder. The displacement channel 18 is closed at both ends by a plug 22 or 24. One plug 22 forms a stop for the axial displacement element 20 in its locking position, while the other plug 24 is supported by a compression coil spring 26. Essentially perpendicular to the longitudinally adjusted key channel 16 a guide bore 28 is provided in which the inelastic holding pin 30 is received.

In Fig. 3, a keyed and secreted key 32 is inserted into the key channel 16. This key 32 has a key grip portion 32a and a key 32b 32b. The key 32b 32 has two side surfaces 32c and 32d. A control path 32e is formed on the side surface 32c with variable recesses. Within this control path 32e, a recess 32f is provided to engage the inelastic retaining pin 30, which has an inner end 30a of the retaining pin 30 in the form of a spherical surface on the side opposite to the recess 32f. As shown in FIG. 4, the partial end surface 30b of the retaining pin 30 also engages the recess 12b in the inner peripheral surface 12a of the receiving bore 12 of the core 14. As can be seen from FIG. The pin 30 into the recess 12b does not engage the inner end 30a of the retaining pin 30 in the recess 32f. 3 and 4, when the locking cylinder core 14 is rotated with the key 32 inserted, the retaining pin 30 is moved radially inwards by creating a cam interaction in the form of a partial spherical surface of the formed outer end 30b of the retaining pin according to FIG. 30 and a recess 12b, in which the retaining pin 30 is displaced in the direction of the recess 32f until it abuts with its partial spherical surface formed by the inner end 30a on the bottom of the recess 32f. Then it is sub-shaped

The outer end 30b formed radially inwardly retracted radially inward to the extent that either abuts the inner peripheral surface 12a or is at a small radial distance therebetween. Then, the locking cylinder core 14 can be further rotated with the key 32.

In the darkness 32b of the key 32, following the key tip 32g, a longitudinal groove 32h is milled, the end of which is formed as a driving surface 32i. It can also be seen from Figs. 1 and 3 that the axial displacement element 20 has a stop pin 20b which diametrically extends through the axial displacement element 20 and with its right end abuts the driving surface 32i of the key 32 in the right end. movably within the hole 14b of the locking cylinder core 14.

While in the case of the key 32 not inserted, the axial displacement element 20 assumes its highest stopper position 22 under the influence of the compression coil spring 26, when the key 32 is inserted into the key channel 16, the stop pin 20b is moved downwards by the driving surface 32i. so that the axial displacement element 20 is also moved downwardly against the action of the compression coil spring 26.

The axial displacement element 20 has, as shown in FIG. 1, an annular recess 20c which is in the position of FIG. 1 outside the region of the retaining pin 30. Furthermore, it has a retaining pin 30 as shown in FIGS. 3 and 4, annular recess 30d. It can be clearly seen from FIG. 2 that when the key 32 is pulled out, i.e. when the axial displacement element 20 assumes its highest position, i.e. its locking position, the axial displacement element 20 with full cross section in the axial region engages the annular recess 30d of the retaining pin. 30, so that the retaining pin 30 is locked in its radial outer position as shown in FIG. 2.

3 and 4, with the keying action of the key 32 on the stop pin 20b of the axial shifting element 20, the axial shifting element 20 is so lowered that its annular recess 20c is now in the region of The retaining pin 30 can then be displaced radially inwardly from its radially outward position according to FIG. 4, as shown in particular in FIG. 4, until the inner end 30a formed in the form of a partial spherical surface engages in the recess 32f of the key 32.

Thus, with the key 32 of FIGS. 3 and 4 inserted, rotation of the locking cylinder core 14 relative to the locking cylinder body 10 is only possible when the annular recess 20c of the axial displacement element 20 reaches the region of the guide hole 28. This requires 32i assumes a corresponding position about the longitudinal axis of darkness 32b of the key 32, or otherwise expressed that the longitudinal groove 32h has a corresponding length.

Starting from the keyed or retracted position of the key 32, that is, from the basic pivot or zero position of the locking cylinder core 14, the locking cylinder core 14 is rotated by acting on the gripping portion 32a of the key 32, pushing the retaining pin 30 as described. by the cam cooperation of the spherical outer end 30b of the retaining pin 30 with the recess 12b radially inwardly into the recess 32f of the darkness 32b of the wrench 32. Because the retaining pin 30 is inflexible, it remains in the radial inner position thus obtained. Further, it can be seen from FIG. 4 that after the radially inwardly inserted retaining pin 30, until its partially spherical internally formed end 30a abuts on the bottom of the recess 32f of the darkness 32b of the key 32, the retaining pin 30 occupies a full cross-sectional area V0. as shown in FIG. 4, into the annular recess 20c of the axial displacement element 20, so that the axial displacement element 20 is now secured in its axial position as shown in FIG.

If the key 32 is pulled out of the key channel 16 after resetting the locking cylinder core 14 to its home or zero position, the axial displacement element 20 cannot immediately follow the upward movement of the driving surface 32i because the retaining pin 30 with its full cross section VQ section it first prevents movement of the axial displacement element

-4GB 289608 B6 upward. Now, however, when the key 32 is retracted, a cam-like interaction occurs between the partial spherical surface formed by the inner end 30a of the retaining pin 30 on the one hand and between the edge region of the recess 32 on the other and during this interaction the retaining pin 30 is shifted radially 1 to 4. Once the position of the retaining pin 30 of FIGS. 1 to 4 has been reached, the axial displacement element 20 can snap back to its highest position according to FIG. 1 by the action of the spring 26. 1 and 2.

FIG. 5 shows a longitudinal section in a state corresponding to that of FIGS. 3 and 4 in a realistic embodiment of a locking cylinder, a double locking cylinder with a U-shaped body 110, in a state corresponding to that of FIGS. 1 to 4, which are incremented by 100. The axial displacement element 120 is displaced by the full insertion of the wrench 132 into the wrench channel against the action of the compression coil spring 126 to the left, the distance between the right end of the axial displacement element 120 and This has resulted in a position in which the annular recesses 1201c to 1204c of the axial displacement element 120 are in the region of the inelastic holding pins 1301 to 1304 so that the locking cylinder core 114 can be rotated by the gripping portion 132a of the key 130. In addition, it can be seen that the wrench 132 is formed with the tip 132e and the toothed face 132m of the wrench 132. The toothed face 132m of the wrench 132 serves to control a series of resiliently loaded pin holders, which are schematically shown in dashed lines in FIG. It can be seen from Fig. 6 that the spring loaded pin holders are formed by a retaining pin 1403b on the side of the locking cylinder core 114, a retaining pin 1403a on the body side 110 and a spring 1403c. wherein in the case of insertion of the concealment of the matched key 132 with the tooth length of the face 132m of the key 132 corresponding to the length of the retaining pins 1403a and 1403b. the holding pins 1403a and 1403b are set such that their dividing plane is identical to the inner circumferential surface 112a so that the lock cylinder core 114 can be rotated when the key 132 is inserted. Otherwise, the illustration in FIG. 6 corresponds to the illustration of FIG. 4. It can also be seen that also on the axial displacement element 120 when the concealment of the matched key 132 is inserted, the locking cylinder core 114 can be rotated by the key 132 1202c, so that, without being locked by the axial displacement element 120, it is freely displaceable and, by cam interaction of the outer spherical end 1302b of the retaining pin 1302 with the edge region of the recess 1122b, can be moved radially inward while rotating the cylinder 1302a into the recess 1322f of the key 132.

Otherwise, in the embodiments of FIGS. 5 and 6, a plurality of retaining pins 1301 to 1304 are provided in place of one retaining pin. The number of these retaining pins does not substantially change the operation of the locking roller to that described in connection with FIGS. 1 to 4.

FIG. 7 illustrates a state starting from the state of FIG. 6 by rotating the lock cylinder core 114 counterclockwise, with the retaining pin 1302 displaced radially inward to engage a full cross section with the annular recess 1202c.

FIG. 8 shows the state of the locking cylinder that is formed from the condition of FIG. 7 when the key 13 is fully pulled out. After the key 132 is fully pulled out, all the retaining pins 1301 to 1304 and hence the retaining pin 1302 of FIG. the radially inner ends of the pins, i.e. the roughly radially inner ends 1302a of the retaining pin 1302 with the recesses 1321f to 1324f of the key 132 extended radially outwardly to the position shown in Fig. 8 so that it can finally snap the axial displacement element 120 back to its locked position 5, the right end of the axial displacement element 120 abuts the plug 122 and the annular recesses of the individual retaining pins, as shown in FIG. 8 based on the annular recess 1302d. serves to accommodate a full cross section of the axial displacement element 120.

-5GB 289608 B6

This prevents the locking cylinder core 114 from rotating. Thus, it can be seen that securing the locking cylinder core 114 against rotation in the basic pivot position or in the zero position when the key 132 is pulled out is now not only provided by the resiliently loaded pairs of retaining pins 1403a, 1403b. but also additionally non-resilient retaining pins 1301 to 1304, which according to the prior art can furthermore contribute to securing against rotation of the locking cylinder core 114 when the key 132 is pulled out.

It should also be noted that, as shown in FIGS. 6 and 7, the recesses 1122b, etc. are individual recesses in the inner circumferential surface 112a, so that in the state of FIG. of the locking cylinder is doomed to collapse, since in such an attempt the retaining pins 1301 to 1304 would have to be pressed radially inwardly by the camming action of their radial outer ends 1302b with the cut-off surfaces of the recesses 1122b, but this is prevented

FIGS. 9 and 10 show a locking cylinder corresponding to FIGS. 5 to 8, but now the key 132 'is inserted. This key 132 'corresponds to the key 132 in terms of its profile and the front teeth but is nevertheless not suitable for opening the locking cylinder because the arrangement of the recesses 1321'f to 1324'f in the key 132' does not correspond to the pin distribution and because the groove length 132'h is changed. has the consequence that, when the key 132 'is inserted, the retaining pins 1301 to 1304, as shown in FIG. 10, are locked on the retaining pin 1302, this locking being effected by the axial displacement element 120 engaging its sections with a full cross-section into the annular recesses of the retaining pins, as shown in FIG. 10 by engagement of the axial displacement element 120 into the annular recess 1302d.

11, 12, 13 show in detail the key 132. In these figures, the arrangement of the longitudinal groove 132h, whose variable length from the locking cylinder to the locking cylinder, is responsible for the position of the driving surface 132i and thus contributes to the secrecy of the locking.

Figures 14, 15, 14a and 15a show a small locking device consisting of a lock cylinder for a manager's room as shown in Fig. 14 and a secretary lock cylinder shown in Fig. 15. 14 is designed so that the manager can open both the lock cylinder of his own room according to FIG. 14 and the secretary room lock cylinder of FIG. 15 with his key 32, but the secretary can only open the lock cylinder with his key 32 ' 15, but not the leading room locking cylinder of FIG. 14.

The locking cylinder shown in FIG. 14, including the corresponding key, also corresponds fully to FIG. 1 with respect to the state shown. Therefore, the description provided therein can be referred to. In contrast to the embodiment of FIG. 14, the locking cylinder of FIG. 15 is altered as follows. The axial length of the annular recess 20'c in the axial displacement element 20 'is altered. Furthermore, the length of the longitudinal groove 32'h in the key 321 is changed. This also changed the position of the driving surface 32'i compared to the position of the driving surface 32i at the key 32. It can be seen that in the embodiment of FIG. the key 32 'sliding, since it is provided in the region of the elongated annular recess 20'c, in the upper sub region of the annular recess 20'c. The key 32 ', that is, the secretary's key, can thus close the lock of Fig. 15, that is the lock in the secretary's room door.

There is no longer any need to explain in greater detail that the lead key 32 can unlock the closure roller of FIG. 14 in the lead room door. For this purpose, explanations have been given for Figures 1 to 4.

Now the manager wants to unlock the lock into his secretary's room with his key 32. This experiment is shown in Fig. 15a. It is shown that when the key 32 is inserted into the lock of FIG. 15a, the axial displacement element 20 'moves less than that of the key 32' of FIG. 15. At the same time, due to the increased length of the annular recess 20'c after insertion of the key 32 retaining pin

-6GB 289608 B6

30 'still in the region of the elongated annular recess 20'c. so that the manager can open the door to his secretary's room with his key 32, as shown in Fig. 15a.

Now, with the key 32 'of FIG. 15, the secretary wants to open the lock to the room of FIG. 14. This is illustrated in FIG. 14a, where the locking cylinder is the same as in FIG. 14, i.e. the locking cylinder of the manager but inserted. secretary key 32 '.

According to FIG. 14a, when the key 32 'is inserted, the axial displacement element 20 is moved further down than when the correct key 32 of FIG. 14 is inserted. As a result, the short annular recess 20c protrudes in the axial direction from the retaining pin 30 so that the axial displacement element This means that the retaining pin 30 is locked by the axial displacement element 20 so that it cannot exit the recess 12b if an attempt is made to rotate the core 14 of the locking cylinder. Thus, a closure device is provided with a master locking cylinder of FIG. Has a corresponding key 32 and a slave locking cylinder of FIG. 15 and a corresponding key 32 '. While the key 32 only allows the key 32 'to operate the locking cylinder of FIG. 15.

Fig. 16 shows a realistic arrangement of the locking cylinder in accordance with the construction of Fig. 15. The elongated annular recesses 1201'c to 1204'c are seen as in Fig. 15 which provide the same effect as in the embodiment of the locking cylinder according to Fig. 15. FIG. 15 shows an extended annular recess 20'c.

Thus, the lock of FIG. 16 can be used as a slave lock, for example, in conjunction with the locking cylinder of FIG. 5.

PATENT CLAIMS

Claims (13)

A lock cylinder having both a lock cylinder body with a bore defined by an inner circumferential surface and a rotatably mounted lock cylinder core with a key channel extending from a key insertion end at one end of the lock cylinder core parallel to the axis of rotation and which is adapted to receive at least one control path in at least one side face for receiving the profile-adjusted keys, said control path extending parallel to the axis of rotation and having a variable level formed by recesses and at least one inelastic holding pin in at least one guide hole of the locking cylinder core, wherein the axis of the hole is provided in a holding plane perpendicular to the axis of rotation and extends into the control path, the holding pin being movable along the axis of the hole in the guide hole; the basic pivoting position of the locking cylinder core is adjustable to the release position for the desired functional release rotation of the locking cylinder core about the pivot axis when the matched profile key and code combination is inserted, while the locking profile key is adjustable to the locking position for retaining the lock cylinder core against rotation in the direction of a functional release position, characterized in that in the channel (18, 118) of the lock cylinder core (14, 114), which is situated parallel to the axis of rotation, is displaceably supported by a resilient element (26, 126) a prestressed element (20, 20 ', 120, 120') which is provided with a stop pin (20b, 20b ', 120b), the element (20, 20', 120, 120 ') being in engagement with the rest position with a non-biased retaining pin (30, 1301, 1302, 1303, 1304) locking element (30d), thus, the rotation of the locking cylinder core (14, 114) is blocked, and in the working position in which the key (32, 32 ', 132), which is its driving surface (32i), is inserted into the key channel (16, 116). 32i ', 132i) in contact with the stop pin (20b, 20b', 120b) of the element (20, 20 ', 120, 120') that is applied by the force of the resilient element (26, -7EN 289608 B6 126) in its end position, the element (20, 20 ', 120, 120') is out of engagement with the locking element (30d) of the retaining pin (30, 1301, 1302, 1303, 1304). Locking cylinder according to claim 1, characterized in that the locking element (30d) of the retaining pin (30, 1301, 1302, 1303, 1304) is formed by a recess in which the full profile section of the element (20, 20 ', 120) fits. 120 '), wherein the element (20, 20', 120, 120 ') has a recess (20c, 20c', 1201c, 1202c, 1203c, 1204c, 1201c ', 1202c', 1203c ', 1204c') by which the stop pin (20b, 20b ', 120b) extends through the full profile of the retaining pin (30, 1301, 1302, 1303, 1304). Locking cylinder according to claim 1 or 2, characterized in that the element (20, 20 ', 120, 120') is formed with a cylindrical profile and its recess (20c, 20c ', 1201c, 1202c, 1203c, 1204c) is formed by an annular recess. Locking cylinder according to one of Claims 1 to 3, characterized in that the retaining pin (30, 1301, 1302, 1303, 1304) is formed with a cylindrical profile and its locking element (30d) is formed by an annular recess. Locking cylinder according to one of Claims 1 to 4, characterized in that the driving surface (32i, 132i) of the respective key (32, 132) is formed by the bottom of a longitudinal groove (32h, 132h) formed in the side surface (32c, 132c) of the key (32c). 32, 132). Locking cylinder according to one of Claims 1 to 5, characterized in that the stop pin (20b, 20b ', 120b) is formed by a projection of an element (20, 20', 120, 120 ') which projects on the channel side (16,116) for key (32.32 ', 132). Locking cylinder according to one of Claims 1 to 6, characterized in that the channel (18,118) is designed as an axial opening separated from the channel (16,116) for the key (32,32 ', 132). Locking cylinder according to one of Claims 1 to 7, characterized in that the opening (12) in which the locking cylinder core (14) is arranged has a recess (12b) for the non-biased retaining pin (30) on the inner peripheral surface (12a). , 1301, 1302, 1303, 1304). Locking cylinder according to claim 8, characterized in that the recess (12b) is limited in the axial direction by a retaining surface adjacent to the outer end (30b) of the retaining pin (30). Locking cylinder according to one of Claims 1 to 9, characterized in that the locking cylinder core (114) has a plurality of retaining pins (1301, 1302, 1303, 1304) of the same length, the associated recesses (1201c, 1202c, 1203c, 1204c) ) on the inner peripheral surface of the element (120) and the recesses (1321 f, 1322f, 1323f, 1324f) on the control path (132e) of the key (132) have the same depth. Locking cylinder according to one of Claims 1 to 10, characterized in that the axial length of the recess (20c, 20c ', 1201c, 1202c, 1203c, 1204c) of the element (20, 20', 120 ') is set according to the full cross-section of the retaining pin ( 30,1301,1302,1303,1304). Locking cylinder according to one of Claims 1 to 10, characterized in that the axial length of the recess (20c, 20c ', 1201c, 1202c, 1203c, 1204c) of the element (20, 20', 120 ') is greater than the cross-section of the retaining pin. (30.1301, 1302, 1303, 1304). -8EN 289608 B6 Locking cylinder according to one of Claims 1 to 12, characterized in that the bearing height of the stop pins (20b, 20b ', 120b) of the element (20, 20', 120, 120 ') and the bearing height of the driving surfaces (32i, 32i) The key (32, 32 ', 132) is the same and adapted to the type of the locking cylinder 5 with the locking cylinder.